baber/WOPTO huggingface dataset:
Patent GB-886199-A (GB)
Title: Improvements in or relating to high-tensile steel
Inventor: ALLEN GEOFFREY BERTRAM
IPC: C22C38/46
Filed: 1959-05-28
Abstract: An alloy steel of the controlled transformation type contains in percentage by weight:- .C.0,20- 0,27 .Ni.3,0 - 8,0 .Cr.9,0 -15,0 .V.1,0 - 3,0 .Si.0 - 2,0 .Mu.0 - 3,0 .Nb.0 - 1,0 .Fe.and balance .impurities. the steel having a martensite-start temperature in the range 0-70 DEG C.  The martensite-start temperature may be controlled by melting the steel with a deficiency of one alloying element, such as nickel, taking and cooling a sample from the bath and comparing its magnetic permeability with that of a known standard specimen as described in Specification 886,200.  The composition of the bath is then corrected as necessary.  Heat treatment of the steel is by heating at 1100 DEG , and cooling fairly rapidly, when machining or forming may be carried out.  The steel is then cooled to -78 DEG C. and after warming to room temperature is tempered at 440-460 DEG C.
Patent GB-204150-A (GB)
Title: Improvements in and relating to lamps for vehicles and the like
IPC: F21V11/16
Filed: 1922-07-03
Abstract: 204,150. Cooke, O., and Linzell, H. C. July 3, 1922. Vehicle lamps; lantern screens; lighting, systems of.-In a vehicle lamp, the source of light 3 is mounted in a casing 1, having a flat base 2, behind a screen 5, and the rays from the source 3 are thrown on to an adjustably-mounted reflector 6 and projected therefrom in a beam, the vertical cross-section of which is in the form of a crescent or semicircular disc with the convex portion downwards and which issues from the lamp in a downward direction. An auxiliary lamp 20 is mounted in the casing 1 in front of the screen 5, this being automatically switched on when the main source 3 is switched off. In a modification, Fig. 4, the casing 21 is provided with a curved base having flanges 24 by which it is secured to an ordinary lamp 22. In this form the screen 5 is dispensed with, the upper part of the lamp 22 acting as a screen. Specification 166,322 is referred to.
Patent GB-1170473-A (GB)
Title: A Transformer
IPC: H01F30/10
Filed: 1967-04-26
Abstract: 1,170,473. Transformers. AEG-ELOTHERM G.m.b.H. 26 April, 1967 [7 May, 1966]. No. 18287/67. Heading H1T. A substantially discshaped transformer comprises spirally wound primary winding portions 1, 2, 3 axially juxtaposed with one or more secondary winding portions 4, 5, surrounded by ferrite cores 6 radially disposed about the transformer windings. The secondary winding portions may be interconnected as at 8, and are provided with terminals 4<SP>1</SP> ,  4<SP>11</SP>. The primary winding portions are also interconnected. The conductors may be hollow copper tubing containing a cooling liquid. The ferrite cores consist each of two L- shaped pieces 6<SP>1</SP> and 6<SP>11</SP>adhesively bonded at 7.
Patent GB-841015-A (GB)
Title: Container for packing and cooking food
IPC: B65D75/58
Filed: 1958-06-09
Abstract: 841,015. Laminates. REYNOLDS METALS CO. June 9, 1958 [June 17, 1957], No. 18396/58. Class 140. [Also in Group XVII] A combined packaging and cooking container (see Group XVII), is made from two laminated sheets, each comprising a layer of metal foil 16 and a layer of impermeable organic resin film 14. The foil 16 may be of aluminium or any ductile metal and the film 14 may be of a high molecular weight polyethylene, vinyl resin or polymeric terephthalate ester. An interlayer of high-wet strength paper 18 may be provided and is impregnated with a small quantity of a resin such as melamine or ureaformaldehyde resins. The paper 18 is sealed to the foil 16 by silicate adhesive and the film 14 to the paper by extruding it directly on to the paper. In use the two sheets are placed together, foil sides outwards, around an article of food and are heat-sealed around their edges to form a doubly-dished container.
Patent GB-457643-A (GB)
Title: Improvements in conveyor screws
IPC: B65G33/00
Filed: 1936-07-03
Abstract: 457,643. Screw - conveyers. LEHMANN, F. B., (trading as LEHMAN, J. M.). 108, Freiberger Strasse, Dresden, Germany. July 3, 1936, No. 18466. Convention date, July 3, 1935. [Class 78 (i)] In a convever screw of the kind comprising a helical member, which is itself coreless, rotating in the gap between a stationary casing and a stationary core with which it forms a close fit, the cross-section of the helical member as shown in the Figure is a trapezoid having short sides normal to the casing and the core and rearwardly converging longer sides.
Patent GB-696208-A (GB)
Title: Improvements in or relating to switches of the kind used in automatic telephony and multiples therefor
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H01H19/58
Filed: 1949-07-13
Abstract: 696,208. Automatic exchange switches. STANDARD TELEPHONES & CABLES, Ltd. July 7, 1950 [July 13, 1949], No. 18501/49. Class 40 (iv). A combined switch multiple and contact bank consists of a strip 33 of insulating material, e.g. resin-impregnated paper, longitudinal multipling tracks 37 deposited in particulate form, e.g. printed, on one side of the strip, transverse groups of tracks 34 similarly printed on the other side of the strip and terminating at an edge to form bank contacts 35 and connections through the strip 33 for connecting the multipling tracks 37 with the appropriate transverse tracks 34. Arcs for switch-wipers may be provided at both longitudinal edges. A group selector bank comprises two strips mounted back-to-back with the multipling tracks staggered, the superposed transverse track laminations constituting the line contacts of each outlet. Specifications 569,388, 646,921, [both in Group II], 696,203 and 696,204 are referred to.
Patent GB-279178-A (GB)
Title: Improvements in vertical water tube boilers
IPC: F22B37/26
Filed: 1926-07-24
Abstract: 279,178. V÷lcker, E. July 24, 1926. Water - tube boilers; tubes, water.-In a vertical water-tube boiler, to separate water from the steam, the tubes are fitted with helical guide plates extending up to or bevond the boiler water level. In a boiler having a number of upper and lower headers 3, 1 connected to a central drum 2 by upper and lower groups of tubes 5, 4, the tubes of the upper group are fitted with helical guide plates 11, and the headers are connected to a steam and 'water drum 6 by feed supply and steam outlet tubes 9, 8. The headers and the drum 6 are arranged out of the path of the heating gases, which are directed downwardly through the tubes. The twist of each helical guide plate increases in an upward direction. The upper tubes are of smaller diameter than the lower tubes, and the heating surface, and the total crosssectional area of the upper tubes are smaller than the heating surface and total cross-sectional area of the lower tubes. The groups 4, 5 may be connected to separate upper and lower headers and arranged side by side, the central drum being dispensed with and the upper headers of the group 4 connected to the lower headers of the group 5 by downcomers.
Patent GB-836986-A (GB)
Title: Improvements in earth leakage control apparatus employing a transformer having a closed magnetic core
IPC: H01F38/28
Filed: 1955-06-28
Abstract: 836,986. Transformers. BALDWIN, H. T. June 27, 1956 [June 28, 1955], No. 18563/55. Class 38 (2). In an earth leakage control apparatus for detecting earth leakage faults in motors or cables, a transformer having a closed magnetic core is provided with a primary winding a<SP>1</SP> supplied from the mains and connected in series with the motor or cable, a further winding c<SP>1</SP> supplied from the mains and a secondary winding b<SP>1</SP> which supplies a relay.
Patent GB-1392062-A (GB)
Title: Animal enclosures
IPC: A01K1/03
Filed: 1972-04-21
Abstract: 1392062 Hamster cage MATTEL Inc 21 April 1972 [30 April 1971] 18572/72 Heading AIM An animal cage suitable for hamsters comprises a transparent central enclosure 20 connected by tubes 60, to transparent housings 30, 38, 46, 54 where the animal may perform various bodily and other functions. The central enclosure 20 has a pivoted perforated lid 22, a grid floor 26, and a removeable waste tray 28, and similarly the -housings 30, 38, 46 have perforated lids, grid floors, and waste trays. Helical springs 68 enable the animal to climb within vertical sections of the tubes 60, and discs 92 which enter slits 90 may be used to isolate an animal in part of the cage. Certain of the tubes 60 may end in plugs 66 to enable additional tubes and housings to be included.
Patent GB-1048918-A (GB)
Title: Organotin compounds
IPC: C07F7/22
Filed: 1964-05-05
Abstract: The invention comprises organotin phenoxides having the formula <FORM:1048918/C2/1> in which R is an alkyl group having 1 to 12 carbon atoms, X is an alkoxyl group having 1 to 4 carbon atoms, a nitro group, an alkyl group having 1 to 9 carbon atoms, a chlorine atom or a bromine atom, Z has the same meaning as X and n is 1 or 2, at least one of the para and ortho positions of the phenoxy ring always having attached thereto a nitro group, and, if n is 2, the Z groups may be different. The compounds are prepared by reacting about one mole of the appropriate dialkyl tin oxide with about two moles of the appropriate nitrophenol; by refluxing in an inert solvent and and removing water azeotropically.  The preparation of dibutyltin bis-(2,4-dinitro-6-t-butyl phenoxide), dibutyltin bis - (2 - nitro - 4 - methyl phenoxide) and di - isobutyltin bis-(2,6 - dibromo - 4 - nitrophenoxide) is exemplified.ALSO:A method of treating land and buildings infested, or liable to infestation, with weeds, fungi or insects comprises applying to the land and buildings an organotin phenoxide of formula <FORM:1048918/A5-A6/1> wherein R is an alkyl group having 1 to 12 carbon atoms, X is an alkoxyl group having 1 to 4 carbon atoms, a nitro group, an alkyl group having 1 to 9 carbon atoms, chlorine on bromine, Z has the same meaning as X, n is 1 or 2, at least one ortho or para position bearing a nitro-group and when n is 2, the Z groups may be different (see Division C2).  A concentration of 20 pounds of dibutylin bis-(2, 4-denitro-6-t-butyl phenoxide/80 gall/acre is specified for weed-killing, and 2 lbs/acre for post emergence application.
Patent GB-455158-A (GB)
Title: Improvements in or relating to the manufacture of starch
IPC: C08B30/04
Filed: 1935-06-29
Abstract: Starch is obtained from corn or other material by subjecting the material to wet milling operations to produce a mill starch containing fine fibre, which is then centrifuged to produce two streams of fluid, viz. a gluten overflow and a starch underflow, the starch underflow being then subjected to fine screening to remove the fibre.  The mill starch may be thickened before centrifuging by filtering and repulping.  The process is illustrated by a flow sheet.
Patent GB-797289-A (GB)
Title: Improvements in or relating to slipping clutches
Inventor: LEDBETTER JOHN
IPC: F16D7/02
Filed: 1955-06-28
Abstract: 797,289. Slip couplings. GENERAL ELECTRIC CO., Ltd. June 28, 1956 [June 28, 1955], No. 18711/55. Class 80 (2).. A plate 7, drivingly connected to one shafthead 13 by axial pins 12, is frictionally clamped between a plate 3, attached to the other shafthead 2, and a plate 6, slidably keyed to a central extension 4 of the plate 3, and urged axially against the plate 7 by a rubber disc 8, helical, spiral or diaphragm spring, adjustably compressed by a screwed end collar 9, locked by a grub-screw 10. Relative slip between the two shafts may be positively limited to a fraction of a revolution. Covers 15, 16 are provided.
Patent GB-1330806-A (GB)
Title: Planetary transmission
IPC: F16H3/66
Filed: 1972-04-21
Abstract: 1330806 Change-speed gearing DANA CORP 21 April 1972 [3 May 1971] 18739/72 Heading F2D A planetary transmission for a cycle comprises an input shaft 42 which extends through a housing 72 and is provided at each end with a pedal crank 38, 40 and to which is secured a carrier 102 for stepped planetary gears 96, 98, 100. The planetary gears engage stepped sun gears 90, 92, 94 which are secured to a hub 126 provided with a drive sprocket 32 externally of the housing and which engage ring gears 82, 84, 86 rotatably supported within the housing. The ring gears are selectively lockable by pawls 144, 146, 148 which are engageable in slots 156 in the associated ring gear, Fig. 6, and which are actuated by a cam-shaft 168. A lever 220 secured to the cam-shaft is connected by a Bowden cable to a manual gear shift lever, Fig. 8 (not shown).
Patent GB-242693-A (GB)
Title: An improved construction of electrical switch
IPC: A63F9/08
Filed: 1924-08-07
Abstract: 242,693. Burrow, A. E., and Prahm, A. G. L. Aug. 7, 1924. Arresting a moving model by competitive control, apparatus for.-A switch for use with games of the " spinner " type comprises an operating lever 3 which when moved from the position shown in full lines to the top dotted line position moves a spring 5 over dead-centres and so causes the quick movement of a lever 4 having a nose 8 which in slipping past a projection 9 on a spring-controlled lever 10 moves the lever 10 and armature 12 which it carries, momentarily towards an electromagnet 15. If the magnet 15 is at this moment energised it will attract the lever 10 still further and close a circuit at 17 which mav be a maintaining circuit for the magnet. Fig. 3 shows two such switches 20 used in a " spinner " game in which a continuously-rotating brush 22 engages successively contacts 23, and thereby causes the momentary energization of the electro-magnets ' 15 which are connected through the terminals 18 and 19 to particular contacts 23. If a competitor causes the lever 10 of a switch 20 to be momentarily actuated simultaneously with the momentary energization of the corresponding electro-magnet, the lever 10 will be held permanently attracted and brake mechanism for the brush 22 or indicating mechanism will also be brought into action through the contact 17 to indicate his success. According to the Provisional Specification, actuation of the operating lever 3 may in all cases cause the momentary closing of a circuit by the lever 10.
Patent GB-146898-A (GB)
Title: Improved process for converting tar oils into neutral oils suitable for lubricating purposes
IPC: C10M135/10
Filed: 1920-07-06
Abstract: Ethers and esters are produced from the phenolic and acidic constituents of tar oils, especially those from low temperature tars, by subjecting the oils to the condensing action of anhydrous aromatic sulphonic acids, preferably in presence of methyl, ethyl, or other alcohol.  The treated oil is washed with water to dissolve out the sulphonic acid, and is used as a lubricant; the sulphonic acid may be recovered by drying at 120 DEG  C.  In an example, the 350-450 DEG C. fraction of low-temperature tar oil is stirred at 150 DEG  C. with the anhydrous sulphonic acid of naphthalene, toluene, or benzene, and sufficient ethyl alcohol to esterify the phenolic constituents.  Or the oil and alcohol vapour are counterflowed through a tower in which the sulphonic acid is distributed.ALSO:Tar oils, particularly those from low temperature tars, are neutralized and made suitable for lubricants by treatment with anhydrous aromatic sulphonic acids in the presence or not of methyl, ethyl, or any other alcohol.  Ethers and esters are said to be produced by the interaction of the phenolic, acidic, and alcoholic groups under the condensing action of the sulphonic acids.  In an example, 100 kilos of the 350-450 DEG  C. fraction of low-temperature tar oil is stirred with 10 kilos of anhydrous naphthalene sulphonic acid at 150 DEG  C. and ethyl alcohol sufficient to esterify the phenolic constituents, e.g. 5-6 kilos with a tar containing 30 per cent acidic constituents.  Or the oil and alcohol vapour may be counterflowed through a tower in which the sulphonic acid is distributed.  The product is washed with water to dissolve out the sulphonic acid.  The acid may be re-used after drying at 120 DEG  C.  Toluol sulphonic acid or benzol sulphonic acid may replace the naphthalene sulphonic acid.
Patent GB-315399-A (GB)
Title: Coupling systems for thermionic radio-frequency amplifiers
IPC: H03J3/06
Filed: 1929-06-19
Abstract: 315,399. Hazeltine Corporation, (Assignees of Trube, C. E.). July 14, 1928, [Convention date]. Addition to 273,639. Thermionic amplifiers. - In a radio-frequency coupling system of the type described in the parent Specification in which the voltage ratio varies automatically with frequency means are provided for securing the desired ratio by arranging that the primary circuit is resonant at a frequency lower, but not greatly lower, than the lowest operating frequency. Fig. 1 shows a coupling system including an inductance L3 and condensers C3, C5 in parallel and a magnetic non- conductive coupling to the resonant circuit L2, C2 comprising L1, C5 in series. In a modification (Fig. 2, not shown) the circuit is re-arranged so that the voltage of the plate source is not across condensers C3, C5. Fig. 3 shows a system in which the coil L3 is coupled to the resonant circuit L2, C2 and is made resonant by a condenser C5 to a frequency lower than the lowest operating frequency and connected between the anode and the primary coil L1. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a coupling system, Fig. 1 (Cancelled) having a high step up between the primary or secondary circuit in which the primary circuit L1, C5, L3 is resonant at a frequency below the lowest operating frequency. An additional capacity may be provided in the primary circuit in parallel to the condenser C5 and the coil L1. Fig. 7 (Cancelled) shaws a modification in which the coil L3 is coupled to the transformer L1, L2, the coupling of coils L2, L3 resulting in a more gradual variation with frequency of the voltage ratio E2/E1. This subject-matter does not appear in the Specification as accepted.
Patent GB-464729-A (GB)
Title: Improvements in or relating to time-correcting devices for clocks, which devices are controlled by alternating electric current of constant frequency
IPC: G04C11/08
Filed: 1936-07-08
Abstract: 464,729. Clocks. JUNGHANS, H., and JUNGHANS AKT.-GES., GEB. July 8, 1936, No. 18933. [Class 139] A clock is periodically synchronized by a heavy pivotal beam or the like displaced against a restoring force by a cam or the like driven by a synchronous motor, the beam, when released by the cam, rocking beyond its normal position to engage a correction disc in the clockwork drive. The beam 1 pivoted at 6 and biassed by an adjustable spring 4 to the position shown, is rocked anticlockwise periodically through an arm 2 by a pin 3 on a disc 14 driven through gearing by a synchronous motor 10. When the pin 3 slides past the arm 2 the beam is rocked by the spring to impart the correcting impulse to a toothed wheel 5 on the minute hand or other shaft of the clock, which is driven by a spring 16, wound continuously by the synchronous motor 10 through a wheel 15, under the control of an escapement 20. To prevent the correcting impulse being transmitted back to the escapement, a braking member, for example, a leaf spring 7 secured to the beam engages a roller 8 on the shaft of a wheel 19 in the clockwork, just before the correction is made. The beam may be in the form of a pendulous lever returned under gravity to effect correction after displacement by the cam or the like.
Patent GB-734898-A (GB)
Title: Improvements in and relating to saturable magnetic core control devices
IPC: G05D3/14
Filed: 1953-07-08
Abstract: 734,898. Electric correspondence control systems. GENERAL ELECTRIC CO. July 8, 1953 [July 9, 1952], No. 18945/53. Class 40 (1). [Also in Group XXXIX] A system in which the angular position of a shaft 15 is controlled by the value of a D.C. current comprises a magnetic amplifier having A.C. windings 5, 6 arranged on saturable core limbs 2, 3 and inductively coupled with D.C. control windings 9, 10, the A.C. windings being energized through a half-wave rectifier 8 while the control windings are arranged in opposition so that induced voltages are normally neutralized. The D.C. control flux acts in opposition to the flux produced by a rotatable permanent magnet 13 located in an apertured centre core limb 4. When these fluxes are unbalanced, unequal saturation of the core limbs 2, 3 occurs and a resultant pulsating voltage is established in the D.C. control circuit which is blocked from the D.C. source by a choke 12. The fundamental frequency component of this voltage is selected by a tuned circuit 21, 22 and applied to a field winding 17 of a servomotor 14. The other field winding 16 is energized by a quadrature voltage derived from the A.C. supply over a condenser 19, and the motor rotates the permanent magnet until a polar position is reached in which the D.C. control winding flux is completely neutralized. A pointer 24 attached to the servomotor shaft indicates the value of the D.C. control current on a scale 25.
Patent GB-1100633-A (GB)
Title: Minimum voltage three-phase relay
IPC: H02H3/253
Filed: 1965-05-05
Abstract: 1,100,633. Protective arrangements. COMPAGNIE DES COMPTEURS. 5 May, 1965 [5 May, 1964], No. 18965/65. Heading H2K. A minimum voltage relay responsive to symmetrical or assymmetrical faults on a threephase supply system comprises conventional filter circuits 10, 11 respectively, providing negative and positive sequence voltages whose difference is fed to a detector 12 also supplied via circuits 13, 14 with a stabilized reference voltage adjustable to determine the operating point of the relay. When the input at terminals 12a, 12a<SP>1</SP> falls below that at 12b, 12b<SP>1</SP> an amplifier 15 (normally quiescent) energizes a control or indicating circuit 16 and also the circuit 13, which thereupon adds a predetermined constant voltage to the reference voltage to produce a positive feed-back effect in detector 12 and so ensure continued operation of members 15, 16 until the voltage at terminals 12a, 12a<SP>1</SP> rises to exceed the sum of the reference voltage and the predetermined voltage, whereupon the predetermined voltage is removed and members 15, 16 restore to normal. A theoretical discussion is given of the functioning of the relay and the derivation of its various operating parameters, Figs. 2, 3 and 4 (not shown).
Patent GB-1388138-A (GB)
Title: Device for the measurement of radii of cams of a camshaft
IPC: G01B7/28
Filed: 1972-04-24
Abstract: 1388138 Measuring cam radius electrically GERHARDT MESSMASCHINENBAU KG 24 April 1972 18993/72 Heading G1N A device for measuring radii of a cam 8 on a cam-shaft 1 comprises an electrical sensor 10 having a plunger 9 engaging the cam and providing an electrical signal representing cam radius and further sensors 17, of which the plunger 15 engages a cylindrical portion 13 of the cam-shaft in the same radial plane as the plunger, and 16 of which the plunger 14 engages the cylindrical portion at a point diametrically opposite the plunger 15, the difference between the signals from these further sensors being obtained in measuring device 18 and being combined in calculator 20 with the difference between the measured and theoretical radii obtained in calculator 12 whereby the effect of deflections of the cam-shaft may be compensated for in the measurement of cam radii. In a further embodiment Fig. 4 (not shown) the effect of radius of curvature of the radii sensor is compensated for by displacing the cylindrical surface sensed eccentrically in the direction of the cam.
Patent GB-750424-A (GB)
Title: Improvements in or relating to trolleys for the display of articles such as bottles of beverages and the like in crates
IPC: A47F5/13
Filed: 1953-07-09
Abstract: 750,424. Hand trucks. MOORHOUSE BROS., Ltd., and WOODHEAD, E. June 21, 1954 [July 9, 1953], No. 19025/53. Class 108 (1). [Also in Group XVIII] A trolley constructed of angle iron, as shown in Fig. 1, supports bottle crates on the flanges of cross members 13, 22, 23, 14 and 15, and an advertisement board 18 may be supported by extended uprights 17. To prevent the crates from tipping, spring strips 26 are provided to engage over the ends of the crates. A bottle opener 24 and cork container 25 are also provided.